Marine microalgae culture: Chaetoceros gracilis with zeolitic product ZESTEC-56 and a commercial fertilizer as a nutrient

1995 ◽  
Vol 14 (4) ◽  
pp. 367-372 ◽  
Author(s):  
JoséL. López-Ruiz ◽  
Rocío García García ◽  
Maria Soledad ◽  
Ferreiro Almeda
Keyword(s):  
Marine Microalgae ◽  
Commercial Fertilizer ◽  
Microalgae Culture ◽  
Chaetoceros Gracilis

Mechanisms of Tri-N-Butyltin Bioaccumulation by Marine Phytoplankton

1989 ◽  
Vol 46 (5) ◽  
pp. 859-862 ◽  
Author(s):  
Thomas C. Chiles ◽  
Peter D. Pendoley ◽  
Roy B. Laughlin Jr.
Keyword(s):  
Linear Relationship ◽  
Isochrysis Galbana ◽  
Competitive Binding ◽  
Marine Microalgae ◽  
Marine Phytoplankton ◽  
Chaetoceros Gracilis ◽  
Synechococcus Sp ◽  
The Relationship ◽  
Fold Excess

We examined uptake of tri-n-butyltin (TBT) by three genera of marine microalgae and one genus of cyanobacterium. There was a linear relationship between external concentrations of TBT and cell burdens in the microalgae Nannochloris sp., Chaetoceros gracilis, and the cyanobacterium Synechococcus sp. (PR-6). The relationship between external TBT concentrations and cell TBT burdens was distinctly nonlinear for Isochrysis galbana. Competitive binding experiments showed a decrease of approximately 88% of the total bound radiolabeled TBT to I. galbana in the presence of a 200-fold excess of unlabeled TBT. No significant decrease of bound TBT was observed for Nannochloris sp. These studies demonstrate that either partitioning or binding may control bioaccumulation of TBT by marine phytoplankton.

Analysis of Dimethylsulfide and Dimethylsulfoniopropionate in Marine Microalgae Culture

2009 ◽  
Vol 37 (9) ◽  
pp. 1308-1312 ◽  
Author(s):  
Cheng-Xu ZHOU ◽  
Ji-Lin XU ◽  
Xiao-Jun YAN ◽  
Yun-Dan HOU ◽  
Ying JIANG
Keyword(s):  
Marine Microalgae ◽  
Microalgae Culture

KMMCC-Korea Marine Microalgae Culture Center: list of strains, 2nd edition

ALGAE ◽  
2015 ◽  
Vol 30 (sup) ◽  
pp. 1-188 ◽  
Author(s):  
Sung Bum Hur ◽  
Jean Hee Bae ◽  
Joo-Yeon Youn ◽  
Min Jin Jo
Keyword(s):  
Marine Microalgae ◽  
Microalgae Culture

Influence of a Combination of Flocculants on Harvesting of Chaetoceros gracilis Marine Microalgae

2016 ◽  
Vol 39 (9) ◽  
pp. 1685-1692 ◽  
Author(s):  
Leticia Pérez ◽  
Jose Luis Salgueiro ◽  
Rocío Maceiras ◽  
Ángeles Cancela ◽  
Ángel Sánchez
Keyword(s):  
Marine Microalgae ◽  
Chaetoceros Gracilis

scholarly journals Harvesting Marine Microalgae Nannochloropsis sp. using Dissolved Air Flotation (DAF) Technique

2021 ◽  
Vol 50 (1) ◽  
pp. 73-83
Author(s):  
Nurafifah Fuad ◽  
Rozita Omar ◽  
Suryani Kamarudin ◽  
Razif Harun ◽  
Idris A. ◽  
...  
Keyword(s):  
Maximum Yield ◽  
Total Solid ◽  
Marine Microalgae ◽  
Dissolved Air Flotation ◽  
Culture Volume ◽  
Microalgae Culture ◽  
Microalgae Biomass ◽  
Harvesting Process ◽  
Column Product ◽  
Dissolved Air

The production of high-value bioproducts from microalgae biomass has been widely investigated. However, their production is hindered by the expensive harvesting process. To date, flocculation followed by DAF process has been accepted as one of the affordable harvesting approaches. In this study, the use of DAF technique was attempted to harvest marine microalgae Nannochloropsis sp. Batch DAF harvesting was carried out using fabricated DAF unit equipped with several compartments including separation column, product collecting vessel and rotary skimmer. Tannin-based biopolymer flocculant, AFlok-BP1 at pH 5 with a concentration of 160 mg/L was used to facilitate the flocculation of particles. The effects of different saturator pressure at 1.8, 2, and 2.2 bar were then evaluated at a constant volume of 6 L microalgae culture. The effects of different microalgae culture volumes (6, 8 and 10 L) were also evaluated at a fixed saturator pressure of 2.2 bar. The highest pressure at 2.2 bar yielded the best result with the highest total solid of 3.19 ± 0.01% and a maximum yield of 1.70 ± 0.05 g/g (wet basis). The microalgae concentration was the lowest (0.027 g/L) when 6 L of culture volume was used. However, the values were significantly higher when the culture volume was increased to 8 and 10 L to approximately 0.035 and 0.050 g/L, respectively. As a conclusion, the study provided evidence for the feasibility of DAF technique in harvesting marine microalgae Nannochloropsis sp.

scholarly journals Isoprostanoid Profiling of Marine Microalgae

Biomolecules ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 1073
Author(s):  
Claire Vigor ◽  
Camille Oger ◽  
Guillaume Reversat ◽  
Amandine Rocher ◽  
Bingqing Zhou ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Fatty Acids ◽  
Polyunsaturated Fatty Acids ◽  
Phaeodactylum Tricornutum ◽  
Marine Microalgae ◽  
Copper Stress ◽  
Bioactive Metabolites ◽  
Chaetoceros Gracilis ◽  
Oily Fish ◽  
Mass Spectrometry Mass Spectrometry

Algae result from a complex evolutionary history that shapes their metabolic network. For example, these organisms can synthesize different polyunsaturated fatty acids, such as those found in land plants and oily fish. Due to the presence of numerous double-bonds, such molecules can be oxidized nonenzymatically, and this results in the biosynthesis of high-value bioactive metabolites named isoprostanoids. So far, there have been only a few studies reporting isoprostanoid productions in algae. To fill this gap, the current investigation aimed at profiling isoprostanoids by liquid chromatography -mass spectrometry/mass spectrometry (LC-MS/MS) in four marine microalgae. A good correlation was observed between the most abundant polyunsaturated fatty acids (PUFAs) produced by the investigated microalgal species and their isoprostanoid profiles. No significant variations in the content of oxidized derivatives were observed for Rhodomonas salina and Chaetoceros gracilis under copper stress, whereas increases in the production of C18-, C20- and C22-derived isoprostanoids were monitored in Tisochrysis lutea and Phaeodactylum tricornutum. In the presence of hydrogen peroxide, no significant changes were observed for C. gracilis and for T. lutea, while variations were monitored for the other two algae. This study paves the way to further studying the physiological roles of isoprostanoids in marine microalgae and exploring these organisms as bioresources for isoprostanoid production.

scholarly journals FATTY ACID ANALYSIS OF MARINE MICROALGAE Chlorella Sp. IN MODIFIED MEDIUM USED GAS CRHOMATOGRAPHY-MASS SPECTROMETRY (GC-MS)

2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Dewi Kurnia
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Raw Materials ◽  
Chemical Compounds ◽  
Fatty Acid Analysis ◽  
Marine Microalgae ◽  
High Cholesterol ◽  
Chlorella Sp ◽  
Microalgae Culture ◽  
Dry Biomass

<p><em>Microalgae is known as a raw materials of pharmaceutical industry, it contains various chemical compounds such as protein, fatty acid, pigments and vitamins. The compound can be use as a basic ingredient of pharmaceutical also can be use as a treatment or prevention agent such as cancer and high cholesterol. Chlorella sp. is a green microalgae which can be found in Indonesia marine area, it also has a high enough of lipid. Compotition of fatty acid from marine microalgae Chlorella sp that cultivated with modification medium has been analyzed. Microalgae culture cultivated with GM 10% as a medium for 8 days. 51,55 L culture produced a 31,0537 gr dry biomass. 31,0537 gr dry biomass Soxhletation produced about 12,8818% w/w oil rendemen. The results of GC-MS analysis, there are 3 types of fatty acids identified in microalgae Chlorella Sp. The composition are palmitic acid (13,34%), linoleic acid (5,39%) and oleic acid (16,40%). Total fatty acid contained is 35,13%</em></p><p><strong> </strong></p><p><strong><em>Keywords:</em></strong><em>Chlorella sp, </em><em>fatty acids, GC-MS.</em></p>

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